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Title: Graphene-doped polymer nanofibers for low-threshold nonlinear optical waveguiding

Graphene-doped polymer nanofibers are fabricated by taper drawing of solvated polyvinyl alcohol doped with liquid-phase exfoliated graphene flakes. Nanofibers drawn this way typically have diameters measured in hundreds of nanometers and lengths in tens of millimeters; they show excellent uniformity and surface smoothness for optical waveguiding. Owing to their tightly confined waveguiding behavior, light–matter interaction in these subwavelength-diameter nanofibers is significantly enhanced. Using approximately 1350-nm-wavelength femto-second pulses, we demonstrate saturable absorption behavior in these nanofibers with a saturation threshold down to 0.25 pJ pulse -1 (peak power ~1.3 W). Additionally, using 1064-nm-wavelength nanosecond pulses as switching light, we show all-optical modulation of a 1550-nm-wavelength signal light guided along a single nanofiber with a switching peak power of ~3.2 W.
Authors:
 [1] ;  [1] ;  [2] ;  [2] ;  [1] ;  [2] ;  [3]
  1. Zhejiang Univ., Hangzhou (China)
  2. Fudan Univ., Shanghai (China)
  3. Univ. of California, Berkeley, CA (United States)
Publication Date:
Grant/Contract Number:
AC03-76SF00098
Type:
Accepted Manuscript
Journal Name:
Light, Science & Applications
Additional Journal Information:
Journal Volume: 4; Journal ID: ISSN 2047-7538
Publisher:
Nature Publishing Group
Research Org:
Univ. of California, Berkeley, CA (United States). Department of Physics
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; graphene; nanofiber; optical modulation; saturable absorption
OSTI Identifier:
1239550

Meng, Chao, Yu, Shao-Liang, Wang, Hong -Qing, Cao, Yue, Tong, Li -Min, Liu, Wei -Tao, and Shen, Yuen -Ron. Graphene-doped polymer nanofibers for low-threshold nonlinear optical waveguiding. United States: N. p., Web. doi:10.1038/lsa.2015.121.
Meng, Chao, Yu, Shao-Liang, Wang, Hong -Qing, Cao, Yue, Tong, Li -Min, Liu, Wei -Tao, & Shen, Yuen -Ron. Graphene-doped polymer nanofibers for low-threshold nonlinear optical waveguiding. United States. doi:10.1038/lsa.2015.121.
Meng, Chao, Yu, Shao-Liang, Wang, Hong -Qing, Cao, Yue, Tong, Li -Min, Liu, Wei -Tao, and Shen, Yuen -Ron. 2015. "Graphene-doped polymer nanofibers for low-threshold nonlinear optical waveguiding". United States. doi:10.1038/lsa.2015.121. https://www.osti.gov/servlets/purl/1239550.
@article{osti_1239550,
title = {Graphene-doped polymer nanofibers for low-threshold nonlinear optical waveguiding},
author = {Meng, Chao and Yu, Shao-Liang and Wang, Hong -Qing and Cao, Yue and Tong, Li -Min and Liu, Wei -Tao and Shen, Yuen -Ron},
abstractNote = {Graphene-doped polymer nanofibers are fabricated by taper drawing of solvated polyvinyl alcohol doped with liquid-phase exfoliated graphene flakes. Nanofibers drawn this way typically have diameters measured in hundreds of nanometers and lengths in tens of millimeters; they show excellent uniformity and surface smoothness for optical waveguiding. Owing to their tightly confined waveguiding behavior, light–matter interaction in these subwavelength-diameter nanofibers is significantly enhanced. Using approximately 1350-nm-wavelength femto-second pulses, we demonstrate saturable absorption behavior in these nanofibers with a saturation threshold down to 0.25 pJ pulse-1 (peak power ~1.3 W). Additionally, using 1064-nm-wavelength nanosecond pulses as switching light, we show all-optical modulation of a 1550-nm-wavelength signal light guided along a single nanofiber with a switching peak power of ~3.2 W.},
doi = {10.1038/lsa.2015.121},
journal = {Light, Science & Applications},
number = ,
volume = 4,
place = {United States},
year = {2015},
month = {11}
}